Easily add two USB 3.0 ports to your computer. Rosewill's PCI-e USB 3.0 solution, the RC-505, provides ultra-fast data transfers at up to 5 Gbps to address the needs of higher performance connections between the PC and increasingly sophisticated peripherals. USB 3.0 is backward compatible with USB 1.0, 1.1, & 2.0 devices and is fully plug-n-play and hot swap compatible. The RC-505 is a great way to take advantage of the latest USB 3.0 data transfer technology.